An official described the compound as having "extraordinary" security measures, including two security gates and walls three to four meters high topped by barbed wire.
一位官员称那个建筑备有“特殊”的保安措施，其中包括两道安全门和三、四米高的围墙，上面设有铁丝网。
2
There were extraordinary security measures at the compound, including 3-5 metre-high walls topped with barbed wire.
另外这个院子有特别的安全措施，3至5米高的院墙上还装有铁丝网。
3
The new process of feeding compound aluminum wire to produce the aluminum steel in mould for slab was introduced.